[Elecraft] [K3] TUNE button not working on 15m

[John Shadle]

I am trying to use the TUNE button to help provide a constant carrier, as I
always do, with my external Dentron tuner. Everything works great--except
it is exhibiting strange behavior on 15m. When I hit TUNE it won't hold the
TX 15W (what I have set as the output power). In fact, it shows 0W and
won't stay on at all.

Any help? Hoping to work some 15m contacts this weekend. :-(

73
-john W4PAH